ESR ICC Evaluation Service, Inc. Issued March 1, 2006 This report is subject to re-examination in one year.

Transcription

1 ESR-1328 Issued March 1, 2006 This report is subject to re-examination in one year. ICC Evaluation Service, Inc. Business/Regional Office # 5360 Workman Mill Road, Whittier, California # (562) Regional Office # 900 Montclair Road, Suite A, Birmingham, Alabama # (205) Regional Office # 4051 West Flossmoor Road, Country Club Hills, Illinois # (708) DIVISION: 03 CONCRETE Section: Concrete Anchoring DIVISION: 04 MASONRY Section: Masonry Anchorage as applicable. The anchors may be used in structures regulated by the 2003 IRC or the 2000 IRC, provided an engineered design is submitted in accordance with Section R of the 2003 IRC or 2000 IRC, as applicable. 3.0 DESCRIPTION REPORT HOLDER: ILLINOIS TOOL WORKS, INC., BUILDE DIVISION 1349 WEST BRYN MAWR AVENUE ITASCA, ILLINOIS (800) EVALUATION SUBJECT: TAPCON SCREW S ADDITIONAL LISTEES: ILLINOIS TOOL WORKS, INC., BRANDS DIVISION 955 NATIONAL PARKWAY, SUITE SCHAUMBURG, ILLINOIS (877) ILLINOIS TOOL WORKS, INC., REDHEAD DIVISION 1300 NORTH MICHAEL DRIVE WOOD DALE, ILLINOIS (800) EVALUATION SCOPE Compliance with the following codes: # 2003 International Building Code (2003 IBC) # 2003 International Residential Code (2003 IRC) # 2000 International Building Code (2000 IBC) # 2000 International Residential Code (2000 IRC) # 1997 Uniform Building Code (UBC) Properties evaluated: Structural 2.0 USES The Tapcon concrete screw anchors are used to resist dead, live, wind and earthquake loads in uncracked, normal-weight concrete or concrete masonry, unless otherwise reported in this report. The Tapcon screw anchors are alternatives to cast-in-place anchors described in 2003 IBC or 2000 IBC Section 1912 or and UBC Section or , 3.1 Tapcon Screw Anchors: The Tapcon screw anchors are manufactured from UNS G (formerly AISI 1022) steel or UNS S (formerly AISI 410SS) stainless steel. They are heat-treated and have an alternating high-low thread form. The screw anchors are available in 3 / 16 - and 1 / 4 -inch-diameter (4.8 and 6.4 mm) sizes with various lengths. Tapcon carbon steel anchors are available with a slotted hex washer head, phillips flat head, maxi set head and Scots stainless steel head, and have either a white, silver or blue coating. The Tapcon stainless steel anchors are available with a slotted hex washer head and phillips flat head and have a silver coating. See Figure 1 for head styles and Table 8 for different head styles and coatings for Tapcon carbon steel and Tapcon stainless steel anchors. 3.2 Normal-weight Concrete: Concrete shall be stone-aggregate, normal-weight concrete having a minimum compressive strength as noted in the tables in this evaluation report at the time of anchor installation. Minimum concrete thickness shall be 1 1 / 2 times the anchor embedment at the location of anchor installation. The concrete shall conform to 2003 IBC or 2000 IBC Sections 1903 through 1905; 2003 IRC or 2000 IRC Section R402.2; or UBC Sections 1903 through 1905, as applicable. 3.3 Concrete Masonry: Concrete masonry units shall be closed-end units, minimum Grade N, Type II, lightweight, medium-weight, or normalweight conforming to ASTM C 90 or UBC Standard The minimum allowable nominal size of CMU shall be 8 inches (203 mm) wide by 8 inches (203 mm) high by 16 inches (406 mm) long. When walls are fully grouted, the grout shall comply with IBC Section , IRC Section R , or UBC Section , as applicable. Alternatively, the grout shall have a minimum compressive strength when tested in accordance with ASTM C a equal to its specified strength, but not less than 2000 psi (13.8 MPa). Mortar shall comply with IBC Section , IRC Section R607, or UBC Standard 21-5, as applicable. The mortar shall have a minimum compressive strength of 1,500 psi (10.3 MPa). 4.0 DESIGN AND INSTALLATION 4.1 Design: General: Anchors described in this report are assigned allowable tension and shear loads for design based on allowable stress design (working stress design). are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, Inc., express or implied, as to any finding or other matter in this report, or as to any product covered by the report. Copyright 2006 Page 1 of 7

2 Page 2 of 7 ESR Design of Anchors in Normal-weight Concrete: Allowable tension and shear loads for installation in normalweight concrete are noted in Tables 1 and 2. Spacing and edge distance requirements are noted in Table 3. Allowable load reduction factors noted in Table 3 are applicable to the allowable loads shown in Tables 1 and 2. Linear interpolation may be used for intermediate spacing and edge distances. Allowable loads for anchors installed in normal-weight concrete subjected to combined shear and tension forces shall be determined by the following equation: Ps Vs + P V t t # 1.0 where: P s = Applied service tension load. P t = Allowable service tension load. V s = Applied service shear load. V t = Allowable service shear load Design of Anchors in Concrete Masonry: Anchors are limited to installation into the face shell of ungrouted or grouted concrete masonry units at locations indicated by the non-shaded areas in Figure 2. Allowable tension and shear loads for installation in concrete masonry are noted in Tables 4 and 5. Spacing and edge distance requirements are noted in Table 6. Allowable load reduction factors noted in Table 6 are applicable to the allowable loads shown in Tables 4 and 5. Allowable loads for anchors installed in concrete masonry subjected to combined shear and tension forces shall be determined by equation given in Section of this report. The spacing between anchors and the distance between the anchor and the edge of the concrete masonry wall shall be as set forth in Table Installation: General: Tapcon screw anchors shall not be installed until the concrete has reached the minimum designated compressive strength. Tapcon concrete screw anchors shall be installed by drilling a pilot hole into the substrate using a handheld electro-pneumatic rotary hammer drill with a carbide-tipped drill bit supplied by ITW Buildex. The hole shall be drilled to the specified embedment depth plus a minimum of 1 / 4 inch (6.35 mm). Dust and other deleterious matter shall be removed by using compressed air, before anchor installation. The Tapcon screw anchors shall then be installed into the hole in accordance with ITW Buildex instructions to the specified embedment depth using a hammer drill in a rotary-only mode with an ITW Buildex Condrive Tool and drive socket Installation with Special Inspection (When Required): Continuous special inspection in accordance with Section 1704 of the 2003 IBC or 2000 IBC or Section 1701 of the UBC, shall be provided when design loads are based on special inspection being provided during anchor installation as set forth in Tables 1, 2, 4 and 5 of this report. The code official shall receive a report, from an approved special inspector, that includes the following details: a. Anchor description, including the anchor product name, nominal anchor diameter, and anchor length. b. Hole description, including verification of drill bit compliance with ITW Buildex, hole depth, concrete thickness and cleanliness. c. Installation description, including verification of concrete compressive strength by ASTM C 42 methods, hole location (spacing and edge distance), fastener embedment, and verification of anchor installation in accordance with the manufacturer s published installation instructions and this report. d. Concrete masonry unit size and compressive strength, mortar compressive strength and, when required, masonry prism compressive strength. 5.0 CONDITIONS OF USE The Tapcon screw anchors described in this report comply with, or are suitable alternatives to what is specified in, those codes listed in Section 1.0 of this report, subject to the following conditions: 5.1 Anchor sizes, dimensions and installation shall comply with this report and the manufacturer s published installation instructions. In the event of a conflict between this report and the manufacturer s published installation instructions, this report shall govern. 5.2 Under the 2003 IBC or the 2003 IRC, use of anchors installed in normal-weight concrete to resist seismic loads is beyond the scope of this report. When using the basic load combinations in accordance with 2003 IBC Section , allowable loads are not permitted to be increased for wind loading. When using the alternative basic load combinations in 2003 IBC Section that include wind loads, the allowable shear and tension loads for anchors are permitted to be increased by 33 1 / 3 percent, or the alternative basic load combinations may be reduced by a factor of For shear, the increase is limited to 15 percent, or the alternative basic load combinations may be reduced by a factor of Under the 2000 IBC or the 2000 IRC, when using the basic load combinations in accordance with 2000 IBC Section , allowable loads are not permitted to be increased for seismic or wind loading for anchors installed in normal-weight concrete. When using the alternative basic load combinations in 2000 IBC Section that include seismic or wind loads, the allowable tension loads for anchors are permitted to be increased by 33 1 / 3 percent, or the alternative basic load combinations may be reduced by a factor of For shear, the increase is limited to 15 percent, or the alternative basic load combinations may be reduced by a factor of Under the UBC, when using the basic load combinations in accordance with UBC Section , allowable loads are not permitted to be increased for wind or earthquake loading for anchors installed in normal-weight concrete. When using the alternative basic load combinations in UBC Section that include wind or seismic loads, the allowable tension loads for anchors are permitted to be increased by 33 1 / 3 percent. For shear, the increase is limited to 15 percent. 5.5 Under the 2003 IBC or the 2003 IRC, use of the anchors in concrete masonry to resist wind or seismic loads is beyond the scope of this report. 5.6 Under the 2000 IBC or the 2000 IRC, use of the anchors in concrete masonry to resist wind or seismic loads is beyond the scope of this report. 5.7 Under the UBC, use of the anchors in concrete masonry units to resist wind or seismic loads is beyond the scope of this report. 5.8 This evaluation report recognizes the anchors as alternatives to anchors described in Section 1912 of the 2000 IBC and the 2003 IBC. For resistance to earthquake loads, seismic tests in uncracked concrete

3 Page 3 of 7 ESR-1328 were conducted to determine compliance with the 2000 IBC. The 2000 IBC contains no provisions for evaluating post-installed anchors in concrete. Therefore, seismic tests in uncracked concrete are acceptable. Section 1913 of the 2003 IBC permits cast-in-place and postinstalled expansion and undercut anchors to be designed in accordance with Appendix D of ACI For design in accordance with Appendix D, postinstalled anchors shall be qualified in accordance with Evaluating the Performance of Post-Installed Mechanical Anchors in Concrete (ACI 355.2). For seismic resistance, ACI requires post-installed anchors to be tested in cracked concrete. ICC-ES has interpreted this requirement to apply to all post-installed anchors, including screw anchors. ICC-ES has also determined that since ACI was not referenced in the 2000 IBC, seismic testing in cracked concrete would not extend to the 2000 IBC. No means of testing screw anchors in cracked concrete is recognized in the ICC- ES Acceptance Criteria for Predrilled Fasteners (Screw Anchors) in Concrete and Masonry (AC106), dated June While the submitted reports on seismic tests in uncracked concrete are acceptable under the 2000 IBC, these tests do not indicate compliance with the 2003 IBC. Therefore, this criteria prohibits recognition of earthquake resistance in concrete under the 2003 IBC or the 2003 IRC. 5.9 Since an ICC-ES acceptance criteria for evaluating data to determine the performance of anchors subjected to fatigue or shock loading is unavailable at this time, the use of these anchors under these conditions is beyond the scope of this report Where not otherwise prohibited by the applicable code, anchors are permitted for use with fire-resistance-rated construction provided that at least one of the following conditions is fulfilled: Anchors are used to resist wind or seismic loading only. Anchors that support fire-resistance-rated construction or gravity load-bearing structural elements are within a fire-resistance-rated envelope or a fire-resistancerated membrane, are protected by approved fireresistance-rated materials, or have been evaluated for resistance to fire exposure in accordance with recognized standards. Anchors are used to support nonstructural elements Since an ICC-ES acceptance criteria for evaluating the performance of screw anchors in cracked concrete or masonry is unavailable at this time, the use of anchors is limited to installation in uncracked concrete or masonry. Cracking occurs when f t > f r due to service loads or deformations Calculations demonstrating that the applied loads are less than the allowable loads described in this report, shall be submitted to the code official. The calculations shall be prepared by a registered design professional where required by the statutes of the jurisdiction in which the project is to be constructed Special inspection, when required, shall be provided in accordance with Section of this report Tapcon carbon steel anchors shall be limited to dry, interior use. Tapcon stainless steel anchors are permitted for exterior or damp locations Tapcon stainless steel anchors are permitted to be used with preservative-treated and fire-retardant-treated wood. Use of Tapcon carbon steel anchors with preservative-treated and fire-retardant-treated wood is beyond the scope of this report The Tapcon screw anchors are manufactured by ITW Buildex, at facilities in Itasca, Illinois, and Roselle, Illinois, under a quality control program with inspections by CEL Consulting (AA-639). 6.0 EVIDENCE SUBMITTED Data in accordance with the ICC-ES Acceptance Criteria for Predrilled Fasteners (Screw Anchors) in Concrete and Masonry (AC106), dated June 2005, including the following optional tests for anchors installed in normal-weight concrete: effects of edge distance on tension and shear performance (Test Series 4, 5, 6, 7, 13, 14, 15, and 16 of AC106); effects of spacing on tension and shear performance (Test Series 9 and 18 of AC106); and seismic performance tests (Section 4.6 of AC106). 7.0 IDENTIFICATION Tapcon screw anchors packaging is marked with the ITW Buildex company name or the name of one of the additional listees noted in this report; product name (Tapcon); anchor diameter and length; the name of the inspection agency (CEL Consulting); and the evaluation report number (ESR-1328). A length identification code letter is stamped on the head of each screw anchor. See the length identification system in Table 7 of this report.

4 Page 4 of 7 ESR / TABLE 1 ALLOWABLE TENSION VALUES FOR TAPCON S INSTALLED IN NORMAL-WEIGHT CONCRETE (pounds) 1,2,3,4 (inches) WITH SPECIAL INSPECTION 5 WITHOUT SPECIAL INSPECTION 6 Concrete Strength, fn c Concrete Strength, fn c 2,000 psi 3,000 psi 4,000 psi 5,000 psi 2,000 psi 3,000 psi 4,000 psi 5,000 psi / / / / / / / For SI: 1 inch = 25.4 mm, 1 lb = 4.45 N, 1 psi = 6.89 kpa. 1 Minimum concrete thickness shall be 1.5 times the anchor embedment. 2 Critical and minimum screw anchor spacing and edge distances shall comply with Table 3 of this report. 3 The tabulated loads are for anchors installed in normal-weight concrete having a minimum compressive strength as shown in the table at the time of anchor installation. 4 Anchor installation shall comply with Section 4.2 of this report. 5 These tension load values are applicable only when the anchors are installed with special inspection as set forth in Section 4.2 of this report. 6 These tension load values are applicable when the anchors are installed without special inspection. TABLE 2 ALLOWABLE SHEAR VALUES FOR TAPCON S INSTALLED IN NORMAL-WEIGHT CONCRETE (pounds) 1,2,3,4 (inches) CONCRETE STRENGTH, fn c 5 2,000 psi 3,000 psi 4,000 psi 5,000 psi 3 / / / / / / / / For SI: 1 inch = 25.4 mm, 1 lb = 4.45 N, 1 psi = 6.89 kpa. 1 Minimum concrete thickness shall be 1.5 times the anchor embedment. 2 Critical and minimum screw anchor spacing and edge distances shall comply with Table 3 of this report. 3 The tabulated loads are for anchors installed in normal-weight concrete having a minimum compressive strength as shown in the table at the time of anchor installation. 4 Anchor installation shall comply with Section 4.2 of this report. 5 Allowable shear loads are for installations with or without special inspection.

5 Page 5 of 7 ESR-1328 TABLE 3 ALLOWABLE SPACING AND EDGE DISTANCES FOR TAPCON S INSTALLED IN NORMAL-WEIGHT CONCRETE (inches) 1,2,3,4,5,6 PARAMETER anchors tension anchors shear Edge distance tension Edge distance shear DISTANCE FOR FULL CAPACITY (critical distance, inches) DISTANCE FOR REDUCED CAPACITY (minimum distance, inches) LOAD REDUCTION FACTOR 3 / / / / / / / / / / / / / / / / The spacing and edge distance requirements in this table are applicable only to Tables 1 and 2 of this report. 2 The critical edge and spacing distances are for full anchor capacity, and the minimum edge and spacing distances are for reduced anchor capacity. 3 The load reduction factors in this table are applicable only to the allowable loads shown in Tables 1 and 2 of this report. 4 Reduction factors are cumulative. Multiple reduction factors for more than one spacing or edge distance are calculated separately and multiplied. 5 Load reduction factors for anchors loaded in tension or shear with spacing between critical and minimum are obtained by linear interpolation. 6 Load reduction factors for anchors loaded in tension or shear with edge distances between critical and minimum are obtained by linear interpolation. TABLE 4 ALLOWABLE TENSION VALUES FOR TAPCON SCREW S INSTALLED IN CONCRETE MASONRY UNITS (pounds) 1,2 3 UBC - WITH SPECIAL INSPECTION 4 UBC - WITHOUT SPECIAL INSPECTION IBC/IRC 4 UBC 21-4 CMU Type UBC 21-4 CMU Type ASTM C 90 CMU Type Lightweight Medium/ Normal Lightweight Medium/ Normal Lightweight Medium/ Normal 3 / / For SI: 1 inch = 25.4 mm; 1 lb = 4.45 N; 1 psi = 6.89 kpa. 1 The tabulated tension loads are for anchors installed in the face shell of lightweight and medium-weight concrete masonry units complying with ASTM C 90 or UBC 21-4 as shown in Figure 2 of this report. 2 The tabulated tension values are for anchors installed at the specified spacing and edge distance as noted in Table 6. 3 The embedment depth is the distance from the concrete masonry unit surface to the bottom of the fastener. 4 Special inspection shall be provided in accordance with Section of this report. TABLE 5 ALLOWABLE SHEAR VALUES FOR TAPCON SCREW S INSTALLED IN CONCRETE MASONRY UNITS (pounds) 1,2,3 UBC 5 IBC/IRC 4 UBC 21-4 CMU Type ASTM C 90 CMU Type Lightweight Medium/Normal Lightweight Medium/Normal 3 / / For SI: 1 inch = 25.4 mm; 1 lb = 4.45 N. 1 The tabulated shear loads are for anchors installed in lightweight and medium-weight concrete masonry units complying with ASTM C 90 or UBC The tabulated tension values are for anchors installed at the specified spacing and edge distance as noted in Table 6. 3 The embedment depth is the distance from the concrete masonry unit surface to the bottom of the fastener. 4 Special inspection shall be provided at all times under the IBC/IRC in accordance with Section of this report. 5 Special inspection under UBC is optional. When required, special inspection shall be provided in accordance with Section of this report.

6 Page 6 of 7 ESR-1328 TABLE 6 ALLOWABLE SPACING AND EDGE DISTANCES FOR TAPCON SCREW S INSTALLED IN CONCRETE MASONRY UNITS (inches) 1,2,3,4,5,6 PARAMETER anchors tension anchors shear Edge distance tension Edge distance shear DISTANCE FOR FULL CAPACITY (critical distance, inches) DISTANCE FOR REDUCED CAPACITY (minimum distance, inches) REDUCTION FACTOR 3 / / / / / / / / / / The spacing and edge distance requirements in this table are applicable only to Tables 4 and 5 of this report. 2 The critical edge and spacing distances are for full anchor capacity, and the minimum edge and spacing distances are for reduced anchor capacity. 3 The load reduction factors in this table are applicable only to the allowable loads shown in Tables 4 and 5 of this report. 4 Reduction factors are cumulative. Multiple reduction factors for more than one spacing or edge distance are calculated separately and multiplied. 5 Load reduction factors for anchors loaded in tension or shear with spacing between critical and minimum are obtained by linear interpolation. 6 Load reduction factors for anchors loaded in tension or shear with edge distances between critical and minimum are obtained by linear interpolation. 7 Reduction applies to anchors installed in medium-weight or normal-weight CMU only. Reduction shall not be permitted for anchors installed in lightweight CMU. TABLE 7 LENGTH IDENTIFICATION SYSTEM LENGTH OF (inches) STAMP ON HEAD OF From Up to But Not Including Carbon Steel Anchors Stainless Steel Anchors / 2 G 4G 1 1 / 2 2 A 4A / 2 B 4B 2 1 / 2 3 C 4C / 2 D 4D 3 1 / 2 4 E 4E / 2 F 4F 4 1 / / 2 G 4G 5 1 / / 2 H 4H TABLE 8 TAPCON HEAD TYPES AND COATINGS HEAD TYPE Carbon steel anchor Slotted hex washer head Phillips flat head Maxi-set head Scots head Stainless steel anchor Slotted hex washer head Phillips flat head FASTENER COATINGS Blue Climaseal 1 Silver Climaseal 2 Ultrashield 3 White Ultrashield 4 Climashield 1 Blue Climaseal is a water-based polymer type coating (blue in color) that has been cured at elevated temperature. 2 Silver Climaseal is a water-based polymer type coating (silver in color) that has been cured at elevated temperature. 3 Ultrashield is a water-based polymer type coating (silver in color) that consists generally of multiple coats which are cured at elevated temperature. 4 White Ultrashield is a water-based polymer type coating (white in color) that consists generally of multiple coats which are cured at elevated temperature. 5 Climashield is a is a water-based polymer type coating (silver in color) that consists generally of multiple coats which are cured at elevated temperature.

7 Page 7 of 7 ESR-1328 SLOTTED HE WASHER HEAD PHILLIPS FLAT HEAD MAI-SET HEAD SCOTS HEAD (STAINLESS STEEL CAPPED) FIGURE 1 TAPCON SCREW HEAD STYLES FIGURE 2 LOCATIONS (LIGHT COLOR AREAS) FOR INSTALLING IN MASONRY UNITS (ALL DIMENSIONS IN INCHES)